We booked 4 nights here after searching for something nice, private, central and reasonably inexpensive.
When we asked Michelle to move up our booking, she was super accommodating and even bumped us up to a nicer room (#6 with a loft bed). Michelle also offered us a hotplate when we realized that there was a fairly limited kitchen. All our interactions with her were easy and fruitful, though we never actually met her.
Her staff person was nice and quick to call Michelle when communication was a challenge. The staff person's male friend (both lived on premises) was also nice, though constantly a bit drunk. This didn't bother me much, but my partner found it off-putting. I agree it could be an issue if anything urgent if ever came up and the main staff person wasn't around.
The apartment itself was great, though to be fair, we never saw the one we originally rented. It was spacious (very good use of space and storage) and well modernized. The loft bed itself was very comfortable though I did bump my head on the really low ceiling a couple of times in making my way from the bed to the stairs.
The neighborhood was a nice balance: not too touristy, but had a fair share of western services (including Villa Market, a grocery store with a good variety of food including organic and gluten free options). It was busy during the day and evening, though there were much fewer services (including restaurants and bars) open after 9pm. The easy access to the BTS and the boat taxis (orange express for 15 baht) made getting around a breeze and inexpensive. My partner also loved the nearby Fulfill Restaurant for its nice staff and many vegetarian options (likely to serve the monks in the adjacent Wat Yanawa, which is totally worth visiting).
Overall a great stay and i wouldn't hesitate to stay here again.